Glass-polishing machine



Feb.6,1923. 1,444,225 W. C. WALKER.

GLASS POLISHING MACH' WITNESS: INVENTOR:

@L @ma l ATTONEY.

Feb. 6, 1923. 1,444,225. w. C. WALKER.

GLASS POLXSHING MACHINE.

man APH.24,1920. z sHFmssHEU u INVENTOR;

A I'TORNEM Patented Feb. 6, 1923.

UNITED STATES PATENT orrica.

GLASS-POLISHING MACHINE.

4Application tiled April V24,

'fo rl/ yiff/10m it may concern.'

Be it known that I, Vianini C. lVaLiisR, a citizen of the United States, residiri in )Ioni-oe Township, in thecounty of L` dison and State of Indiana. have invented a new and useful Glass-Polishin lilaehine, of which the following is a speci cation, refer* ence being had to the accompanying drawings, andto the letters and figures of reference marked thereon. v

This invention relates to a machine that is designed tio operate on horizontal sheets or plates `of glass to polish the surface thereof,v the invention having reference more particularly to a. glass-polishing machine that may,- have a permanent supportfor guiding it) or may have, a portable support so that the machine may be readily moved from place to 4place as may be desiredA instead of moving the glass to ported machine.

An object of the invention is to provide- `glass-polishing machine of such construe tion as to operate rapidly and efficiently in remoring'or eliminating scratches or other blemishesor defects from the surface of the I sheet glass, especially plate glass, whether newly made or previously used lass'f sheets. for the pui'A ose of restoring t e original polished sur' ace or correcting defective portions of the surface to correspond with the the permanently supori'rrinally perfect surface.

nother object is to provide a glass-polishing machine heard which shall be so constructed iis to be adaptable eitherto'be permanently arrangedat a table or to be trans ferred from one to another tableland` to be supported uponthe sheet of gla on a table.

A further object is to provide an improved glass-polishing machine which shall he so constructed as to be capable of being readily .controlled so as to operate with more or less force upon the glass, Particularly so that the final finishing operations 'may be delicately performed to,obtain the best results.

With the above-mentioned and other objects in View. the invention consists in a polishing head of novel construction and adapted to he variously guided' and controlled, :ind further iii the parts and combinations and arrangements of parts as hereinafter particularly described and finally defined in the appended claims.

Referring to they drawingsf-Figure 1 is u side elevation of the glass-polishing ina- 1920. Serial VNo. 376,193.

chine permanently arranged; Fig. 2 is a top 'plan of 'the machine; Fig. 3 is a top plan of the polishing Wheel frame; Fig. 4 is a side elevation of the gla-polishing machine slightly modified so as to be portable; Fig. 5 .is a, top plan of Fig. 4; a portion thereof being broken away; Fig 6 is a verticalcentral section of the olishing bead as preferably constructed; lig. 7 is a vertical central section showing associated parts of the machine in detail; and, Fig. 81 is a fragmenf tary sectional elevation showinfY a. portion of the preceding figure in detai on unenlarfved scale.

imilar reference characters in the differ ent figures of the drawings indicatel correspending elementsor features of construction herein referred to in detail.

Then it is desired that the polishing ma chine be permanently arranged a suitable .upright support 1 is selected or provided and on which al vertical shaft2 is suitably supported rotatably :ind provided with a \pulley 3 to -he driven by a. belt 4, the shaft 4having also ii pulley 5 thereon, all of which may be of various construction as to detailsf.

rovided4 with a I l The polishing head .is

suitable jointedframe which comprises an open-work 4main part 6 connected to thev shaft 2 so as to swin thereon and permit the shaft to rotate, t e 'main part? having shaft boxes i7 and 8 arranged one above another and vertically supporting` a shaft 9 which is secured against rtation by a set-,

screw 10 o'r otherwise.l Two pulleys 11 and 12 are connected together, integrally or .oth-

erwise and are -rotatably arranged on the shaft 9. The uppermost pulley 12 has a driving disk 13 on its top. The pulley 11 is to be driven by means of a belt 14 connected therewith andthe pulley 5. An adjusting screw 15 is arranged in thei u `per portion of thc shaft 9 and has a hea 16 thereon. The shaft has a slot 17 at a suitable distance below its upper end, the slot extending vertically and constituting a journal bearing. A sleeve 18 is arranged to slide vertically over the upper portion of the shaft and has a head 19 that receives the adjusting screw, the lower portion of the sl eve being adapted to rest upon a. journal, ing preferably provided with a concavity 2U to receive the uppermost portion of the journal. A spring 2l is arranged upon the head 19 and is under compression against the head lf/to yieldingly force the sleeve downward. A goosemeck arm 22 is provided with journal boxes 23 and 24 which areiconnected with the shaft 9 so as to turn thereon and thereby be hinged to the main part G, the arm extending upwardly from the nmin part1 and near its end portions is provided with journal boxes 25 and 2G to constitute portions of the polishing head.

The polishing head which is an important feature of the invention includesa. wheel frame comprising ir main portion 2T having lateral arms28 and 29 on the ends of which are side bars() and 31 extending upwards.

and downwards from the arms, the lower portions of the side bars havin'gaan axle 32 connected thereto. A spindle 33is vertically arranged and secured rigidly to the main portion of the wheel frame and a sleeve or lon'g hub 34 is rotatably arranged on the s indie and has a pulle 35 secured thereto, t e sleeve being rotatably arranged in the journal box 26 and guiding the s indie. A

' belt 36 is connected with the pnl ey 35 and also with the pulley 12 to rotate the sleeve or hub.- The spindle extends upward thnough and is rotatably guidedA in the journal box 25. The lower portion of thesleeve or hub has a bevel gearwheel ,fixed thereon and the under side thef prefer-' abl is provided with"a.suittb1ef1bering colar 38 su ported upon the' ininf'portion 27. Prefera ly the spindle :B3-'has s, collar 39 secured thereto at the top of-thesleeve 34. Two shafts 40 and 41 are arranged in the upper portions of the side bars 30 st nd 31 respectively, and secured to the main aortion 2 and they support bevel geur w eels ,42 and 43 respectively, that are in mesli with opposite portions of the wheel 37, to be rotated byl the latter in opposite dire'ctions. The wheels 42 and 43 have extended hubs 44 and 45 respectively, on which sprocket wheels 46 and 47 are fixed, respectively. Two polishing wheels 48 and 49 have hubs 5U and 5l fixed thereon respectively that. are mounted on 'the axle 32, the hubs having sprocket wheels 52 und 53 fixed thereon respectively. A sprocket chain 54 is connected with the wheels 4F and 52 und n. similar sprocket elutin is connected with the wheelsyii und 53. so tlnxt' the .polishing wheelsl shall be driven in opposite directions.

i The polishing wheels :rre arranged :is elose together us muy he practicable und hure suitulile buffer hands 56 und 5T thereon.

A geur wheel 5B is secured to the spindle Zll for slowly turning the wheel frame in operation. The portion of the gmse-neck urm that has the. journal box 25 is provided with a shaft bearing 59, und :L shuft 60 is horizontally arranged and has a journal portion (Sl rotatably arranged in the box 59 und has also another journal portion (S2 arranged in the shaft bearing 17 of the ver-.`

tical shaft 9. The shefttl)Y has a worm 63 vided slot 66 between its ends receiving the uppery portioniof the spindle 33. a eoil spring 11T arranged on the spindle und suitubliA sented on the journulf'box. 2.3 und the under side of the lever to' force the zolishing wheel frame upward. u bearing ep hir (1S arranged upon the lever, a nut 69 secured to the spindle in conhietfwitb the eollur. u link Tu pivoted to lthe urin 22 and pivotully `eonnected with one e'ngl of the lever (i5. :i link T1 pivoted..to the opposite end of the Vlever 65, and ay dqntrollimlever 7:! connected to the link 71 arid pivoted to the .um 22 udjze cent to the joiirnal box 26. The pernmA nently arranged 'tpparatus muy swing over a sheet of glassrepresented by the line T3 arranged upon a table 74, so that. the polishing whelsinay be readily shifted from one place toalnother upon the glass as mayl be r uired. i i,

henitlisdesiredthalt the polishing nni` chine shall portable lind be supported upon the gleed-"sheet repre nted by the line T5 thel machine -islprvider witl; a suitable platform 76 havi Vlegs 77 Afwhiph are pro-l vided with rubbe'fired wheels 78 and 79, and one end ofth 'ifpla'tform has 'a ooseY net-li arm 80 extend` 'g upwardly am?` rofth journal oxes 2W and 26 in which thle spindle 33 a.l dthe long hu`b 44 are rotatably mounted, the hub or sleevp 34 having the pully 35.` secured thereto. The

frame, t epolishin wheels and the gearing may he construe and arranged as above described. The farm 80 has a. bearing box 81 und "preferably a similar box 82 supporting the shaft 60 having the Worin 63 in engagement with the gear wheel 5S, and the arm hns also u controlling urn B3 rigid thereon to enuble the operator to lnove und control the nnu'hine. Ahollow shaft 84 is rotatable on u vertical shaft 9' supported lvertiijally on the platform und has u pulley 85 secured thereto which has-the friction drive disk 13 on its top to rotate the dislr 64, the shaft 60 having the journal portion 62 arranged in the slot 17 with which the 'shaft 9 is provided, the upper portion of the shaft heilig equipped similarl to the u per portion of the shaft 9, The ol-low sh v84 has a bevel gear wheel 86 fixed thereto which is engaged by a pinion 87 secured to a horizontal shaft polishi head including the polishing wheelV 88 of a suitable electric motor 89 supported `on the platform TG. A belt 3G' is connected with the pulley Hf and atpulley 35.

In the operation of the permanently arranged polishing machine the operator swings the supporting arm by means of the lever 72 and Vmay lower the polishing wheels to the glass plate by pressing downward on the controlling level'. Suitable polishing substance is placed upon the glass surface and worked bv the polishing wheels which as will be understood. are rotated in opposite directions while the polishing wheel frame is continuously rotated, so that while the polishingr wheels are moved about upon the glass surface all the scratched or defective )ortions of the surface may be quickly polis ed, the rubbing contact being in all directions under control of the operator. ln the operation of the portable machine the weight of the polishing wheel heil and connections is partly counter-balanced by the motor on the opposite portion of the latform, so that tln` operator bv means o the.,

lever arm 83, may readily lift the polishingr wheels from'` the glass or may force the wheels to the glass, and while the wheel frame is mechanically rotated the operator.

about from place to plate, or swing' the the wheel frame xs may roll the machine place upon the glass machine about while A rotated and the polishing wheels are operatin" on the glass. A

rlaving thus described the invention, what is claimed as new is- 1. A machine for re-polishing glass plates, including a frame arm movably supported, a guide shaft mounted on the arm, a hollow hub rotatably mounted in the arm, a bevel gear wheel and a pulley fixed to the hub, a driving pulley on the guide shaft, a belt connected with the two pulleys, a wheel frame, a spindle rigidly secured to the wheel frame and rotatably guided in the hollowl hub and also separately in the frame arm, gearing connected with the driving pulley and the spindle to continuously rotate the s iindle, two polishing wheels arranged closely together side by side and rotatably mounted approximately in contact euch wit i the other in the wheel trame, and gen1-ings to rotate the polishing wheels respectively connected with the bevel gear wheel.

2. ln a glasspolishing machine, the combination with a goose-neck arm having a journal box, of an upright wheel fraaie provided with an axle adjacent to the lower end thereof, two polishing wheels arranged closely together and rotatable on the axle, a driving geai' wheel arranged at the upper end of the wheel frame and having a sleeve hub thereon that extends rotatably through the journal box` a pulley secured to the sleeve hub above the journal box for rotating the hub, a driving pulley, a belt connected with the two pulleys. a stem secured 4to the wheel frame adjacent to the u per end thereof and extending through the s eei'e hub` two gear wheels rotatably supported on the upper portion of the wheel frame in mesh with the driving gear wheel. and motion-transmitting means connected with the two gear wheels and the polishing wheels respectively to rotate the polishing wheels. Y

ends thereof, two polishing wheels arrangedy closely together and rotatably mounted in.

approximate contact each with the other on the axle, two sprocket wheels fixed on the polishing wheels respectively, a sprocket chain connected with the Vsprocket wheel that is on one of thebevel gear wheels and also 'with the s lrocket wheel on one of the polishing wheels, a'sprocket chain connected with the sprocket, wheel 'on the remaining hneofthe bevel gear 'wheels and also withl the sprocket wheel on the ielnaining one of the polishing wheels, a spindle secure( to said central main portion, and a bevel driving gear wheel rotatable on the spindle and engaging the two bevel gear wheels.

4. In a glass-polishing machine, the combination with a movable guiding frame having two journal boxes adjacent to one end thereof and arranged one above the other, a shaft non-rotatably supported vertically by the guiding frame ata distance from the journal boxes and having a, journal bearing adjacent to its upper end, a driving pulley rotatable on the shaft and having a frictiondrive disk on its top, and means to rotate the driving pulle of a sleeve hub rotatably arranged in the lbwer one of the two journal boxes and having a driving gear wheel l'ixed on the lower portion thereof, a pulley secured to the upper portion of the Sleeve hub, a belt connected with said pulleys, a wheel frame having a main portion ardle secured to said main portion and extending rotatably through said hub and into the upper one of said journal boxes, a polishing wheel rotatable in the wheel frame, motiontransmitting means connected with the driving gear wheel and the polishing Wheel, a, worm-gear Wheel secured to said spindle above said hub, a horizontal Shaft rotatably iso.

' journal bearing and having a, worm fixed thereon in engagement with said worm-gear wheel, and a disk adjustably secured to the horizontal shaft in contact with said friction-drive disk.

5. In a glass-polishing machine, the combination with a guiding frame having two journal boxes arranged one above the other, of a sleeve hub rotatabl arranged inthe lower one of the journa boxes, a driving wheel fixed to the lower portion of the sleeve hub, a wheel frame arranged beneath the driving wheel, a spindle secured `to the wheel frame and extending movably through the sleeve hub and the upper one of the'two journal boxes, a polishing wheel rotatably arranged in the wheel frame, motion-transmission means connecting the polishing wheel with the driving wheel, a coil spring arranged on the spindle and'supported upon the upper one ofthe journal boxes, a link connected to the guiding frame adjacent to the upper oneV of thejournal boxes, a controlli lever pivotallyA connected at one end with the link and having an a ertuue between its ends -receiving the spin le, the lever being supported upon the s ring, a lifting device connected to the spin le to be engaged b\y the lever, an o rating lever pivoted-at one end to the gui ing frame ad )acent to the lower one of the Atwo journal boxes, a link connected with the operating lever and also with the controlling lever adjacent ,to the opposite end thereof, and a device secured to the sleeve hub to rotate the hub.

therein,

6. In a 'glasspolishing machine, the combination with a guiding frame having a journal box adjacent to one end thereof, of a guide shaft fixedly supported by the guiding rame and having a Journal bearing therein, a pulle rotatabl arranged on the guide shaft and lliavingA a fi'iction-drive disk thereon, a. Wheel frame arranged below the journal box, a driving gear wheel arranged upon the Wheell frame and having a sleeve hub rotatably arranged in the journal box, means t'o rotate thesleeve hub, a spindle secured to the wheel frame and extending rotatably through the sleeve hub, a polishing wheel rotatable in the wheel frame, transmission gearing connecting the polishing Wheel with the driving gear wheel, a horizontal shaft rotatably supported on the guiding fra-me and in said journal bearing, gears connecting the horizontal shaft with the spindle, a. disk adjustably secured to the horizontal shaft in contact with the friet-iondrive disk, a sleeve movable on the upper {grtion of the guideshaft and having a aring cavity receiving a portionof the horizontal shaft, the sleeve having a head an adjusting screw extending through the head in said sleeve and into the top of the duideshaft and having a head thereon, andJ a coil spring onthe adjusting screw and seated against said heads.

In testimony whereof, I afiix my signature in presence` of two witnesses.

WILLIAM C. W ALKER. Witnesses:

JACOB J. LONG, VViLmAM T. Baum. 

